Minor updates to UtUtilsClass docs (#1374)

Author: olganaumenko

docs/UtUtilsClass.md

@@ -3,20 +3,21 @@
 ## What are the utility methods
 
 _Utility methods_ implement common, often re-used operations which are helpful for accomplishing tasks in many 
-classes. In UnitTestBot _utility methods_ include those related to creating instances, checking deep 
-equals, working with arrays, using lambdas and so on — miscellaneous methods necessary for generated tests.
+classes. In UnitTestBot, _utility methods_ include those related to creating instances, checking deep 
+equality, mocking, using lambdas and so on — miscellaneous methods necessary for generated tests.
 
 ## Why to create UtUtils class
 
-Previously UnitTestBot generated _utility methods_ for each test class when they were needed — and only those which were necessary for the given class. They were declared right in the generated test class, occupying space. Generating multiple test classes often resulted in duplicating _utility methods_ and consuming even more space.
+Previously, UnitTestBot generated _utility methods_ for each test class when they were needed — and only those which 
+were necessary for the given class. They were declared right in the generated test class, occupying space. Generating multiple test classes often resulted in duplicating _utility methods_ and consuming even more space.
 
 For now UnitTestBot provides a special `UtUtils` class containing all _utility methods_ if at least one test class needs some of them. This class is generated once and the specific methods are imported from it if necessary. No need for _utility methods_ — no `UtUtils` class is generated.
 
-We create a separate `UtUtils` class for each supported codegen language (if this class is required).
+We create a separate `UtUtils` class for each supported language (if required).
 
 ## What does it look like
 
-Here is an example of documentation comment inherent to every `UtUtils` class:
+Here is an example of a documentation comment inherent to every `UtUtils` class:
 
 ![Documentation](images/utbot_ututils_2.0.png)
 
@@ -35,8 +36,9 @@ UnitTestBot uses [Mockito framework](https://site.mockito.org/) to implement moc
 `deepEquals()` 
 _utility method_ should be configured — it should have a check: whether the compared object is a mock or not. That is why the `UtUtils` class for the tests with mocking differs from the one without mocking support.
 
-If you have previously generated tests with mocking, the next `UtUtils` class will support mocking as well — even if 
-it is upgraded or current tests do not need mocking, so that the existing tests can still 
+If you have previously generated tests with mocking, the next generated `UtUtils` class supports mocking as well — 
+even if 
+its version is upgraded or current tests do not need mocking, so that the existing tests can still 
 rely on the proper methods from `UtUtils` class.
 
 ## Where to find it